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18-10-2018 23:23

Allophylaria zenobia on Quercus robur leafs
Johan Myhrer

Have been struggeling with these for a while, foun

18-10-2018 23:55

Literature request
Yaroslav Mieshkov Yaroslav Mieshkov

Hello,Does anyone has the following paper? Bertau

08-10-2018 14:51

Small, aggregated Encoelia
Edvin Johannesen Edvin Johannesen

I came across these dense mats of apothecia seated

18-10-2018 10:37

Literature request
Bernard Declercq Bernard Declercq

Hello, Can anyone supply me following paper? Pa

17-10-2018 07:10

Lachnum (?) on shells of Fagus nuts
Ethan Crenson

In Northeastern North America.  On the banks of a

15-10-2018 18:55

Trichoderma ot Hypocrea?
hannie wijers

Hello, I'd like some help if possibleIn Beilen I

16-10-2018 23:33

Peziza sp (grupo violáceas)
Valencia Lopez Francisco Javier

Hola a todos/asPeziza recolectada en el sur de Esp

03-10-2018 22:13

Hyalorbilia on a polyporus?
François Bartholomeeusen

Good evening forum members,Can this be Hyalorbilia

14-10-2018 19:25

White, hairy on Populus leaf
Marja Pennanen

Hi, on a Populus leaf among other things, I found

15-10-2018 10:52

Hymenoscyphus ?
Castillo Joseba Castillo Joseba

Del pasado sabado en bosque de avellanos,   pare

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SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco SÁNCHEZ, 15-05-2018 23:41
Francisco SÃNCHEZApothecians that grew, a few days ago, on very humid soil with humus, in riverbank forest with Alnus, Populus and Fraxinus.

Apothecia 3-8 mm in diameter. Hairs edge of (243.9) 275.6 - 325.3 (339.7) microns long, with truncated edge almost always, sometimes bifurcated. Shorter exciple hairs, of (138.7) 162.2 - 242.4 (325.7) microns.


Ellipsoidal, verrucous ascospores, of


(18) 18.4 - 20.7 (21.3) × (13.4) 14.1 - 16 (16.6) microns
Q = (1.2) 1.22 - 1.4 (1.5); N = 28
Me = 19.7 x 15.2 microns; Qe = 1.3


Esporal decoration formed by isolated warts of (0.7) 0.9 - 1.4 (1.5) microns in height.


Ascas (238.7) 241.1 - 312.5 (337.2) × (18) 19.5 - 29.3 (30) microns


Paraphysis of (243.9) 275.6 - 325.3 (339.7) microns in length, with terminal element usually widened (6.3) 7.3 - 12.3 (13.4) microns wide.


For the shape, spores decoration and length of the hairs I think of Scutellinia kerguelensis or S. umbrorum. Although I have found in the literature contradictory information on the measures of the hairs and spores decoration in both species.


What is your opinion?


Thank you very much.

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Malcolm Greaves, 16-05-2018 15:45
Malcolm Greaves
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco
Did you try to see if the spore wall loosened in heated cotton blue.
The spore shape and size and the hair features and size you have fit well for S superba. The sketch of the spore in Schumacher shows the spore as broadly ellipsoid like yours but the SEM picture shows a much more ellipsoid shape.
Although the spores are the right shape they look too small and have the wrong ornamentation for S kerguelensis. The hairs are also too short. The spores are a better fit for S umbrorum but again the hairs are a bit short and have the wrong root and number of septa.
Mal
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Francisco SÁNCHEZ, 17-05-2018 00:22
Francisco SÃNCHEZ
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Dear Malcom, I have read the description of the species that you propose to me, Scutellinia superba, in the monograph of Schumacher and it seems to me that it coincides a lot with that of my apothecia. I will try to check the separation of outermost wall.

Thank you very much for your didactic comments.

Francisco SÁNCHEZ, 17-05-2018 12:10
Francisco SÃNCHEZ
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Good afternoon, Malcom.

I do not have acetic acid nor cotton blue.

I have Lactophenol Blue. Can I do the test with this compound?

Malcolm Greaves, 17-05-2018 12:49
Malcolm Greaves
Re : SCUTELLINIA KERGUELENSIS o S. UMBRORUM ?
Francisco

I am fairly sure that Lactophenol Blue is what I am calling L Cotton Blue.

Mal